1. Passive Avoidance Learning in Individuals with Psychopathy: Modulation by Reward but Not by Punishment.R. J. R. Blair, D. G. V. Mitchell, A. Leonard, S. Budhani, K. S. Peschardt & C. Newman - 2004 - Personality and Individual Differences 37:1179–1192.
    This study investigates the ability of individuals with psychopathy to perform passive avoidance learning and whether this ability is modulated by level of reinforcement/punishment. Nineteen psychopathic and 21 comparison individuals, as defined by the Hare Psychopathy Checklist Revised (Hare, 1991), were given a passive avoidance task with a graded reinforcement schedule. Response to each rewarding number gained a point reward specific to that number (i.e., 1, 700, 1400 or 2000 points). Response to each punishing number lost a point punishment specific (...)
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  2. Somatic Markers and Response Reversal: Is There Orbitofrontal Cortex Dysfunction in Boys With Psychopathic Tendencies?R. J. R. Blair, E. Colledge & D. G. V. Mitchell - 2001 - Journal of Abnormal Child Psychology 29 (6):499-511.
    This study investigated the performance of boys with psychopathic tendencies and comparison boys, aged 9 to 17 years, on two tasks believed to be sensitive to amygdala and orbitofrontal cortex func- tioning. Fifty-one boys were divided into two groups according to the Psychopathy Screening Device (PSD, P. J. Frick & R. D. Hare, in press) and presented with two tasks. The tasks were the gambling task (A. Bechara, A. R. Damasio, H. Damasio, & S. W. Anderson, 1994) and the Intradimensional/ (...)
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  3. Risky Decisions and Response Reversal: Is There Evidence of Orbitofrontal Cortex Dysfunction in Psychopathic Individuals?D. G. V. Mitchell, E. Colledge & R. J. R. Blair - 2002 - Neuropsychologia 40:2013–2022.
    This study investigates the performance of psychopathic individuals on tasks believed to be sensitive to dorsolateral prefrontal and orbitofrontal cortex (OFC) functioning. Psychopathic and non-psychopathic individuals, as defined by the Hare psychopathy checklist revised (PCL-R) [Hare, The Hare psychopathy checklist revised, Toronto, Ontario: Multi-Health Systems, 1991] completed a gambling task [Cognition 50 (1994) 7] and the intradimensional/extradimensional (ID/ED) shift task [Nature 380 (1996) 69]. On the gambling task, psychopathic participants showed a global tendency to choose disadvantageously. Specifically, they showed an (...)
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